My Poison Princess Is Still Cute, Vol. 2 (manga)

Princess Raffy and Sir Loren-a demon princess who emits poison and the immortal knight sworn to protect humanity. But behind closed doors, Loren is just a doting husband who adores the cutest princess in the world! However, between Raffy’s shy nature and Loren’s gentlemanly boundaries, they’re kind of stuck. Can some new faces in the palace help nudge their love story along…?!